#!/bin/sh

# Slackware build script for Guix

# Copyright 2015-2016 Hunter Sezen California, USA
# All rights reserved.
#
# Redistribution and use of this script, with or without modification, is
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
#  THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED
#  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
#  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
#  EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
#  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
#  OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
#  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
#  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
#  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

PRGNAM=guix
VERSION=${VERSION:-0.12.0}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}

if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) ARCH=i586 ;;
    arm*) ARCH=arm ;;
       *) ARCH=$( uname -m ) ;;
  esac
fi

CWD=$(pwd)
TMP=${TMP:-/tmp/SBo}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

if [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi

set -e

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$VERSION
tar xvf $CWD/$PRGNAM-$VERSION.tar.gz
cd $PRGNAM-$VERSION
for bin in armhf i686 mips64el x86_64; do
  case "$bin" in
    armhf ) GVERS=2.0.11 ;;
    * ) GVERS=2.0.9 ;;
  esac
  if [ -f $CWD/guile_${bin}_linux-${GVERS}.tar.xz ]; then
    cp $CWD/guile_${bin}_linux-${GVERS}.tar.xz \
      gnu/packages/bootstrap/${bin}-linux/guile-${GVERS}.tar.xz
  fi
done
chown -R root:root .
find -L . \
 \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 \
  -o -perm 511 \) -exec chmod 755 {} \; -o \
 \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
  -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;

# To share the store with nix
SHARE=${SHARE:-no}
if [ "${SHARE:-yes}" = "yes" ]; then
  share="--with-store-dir=/nix/store"
  var="--localstatedir=/nix/var"
else
  var="--localstatedir=/var"
fi

# To use the nix-daemon instead of the guix-daemon
NIX=${NIX:-no}
if [ "${NIX:-yes}" = "yes" ]; then
  nix="--disable-daemon"
else
  nix=""
fi

# import: crate: Do not build when guile-json is not available.
# http://git.savannah.gnu.org/cgit/guix.git/commit/?id=6023041346c79f7ac4105bba2552a82019fae840
zcat $CWD/guile-json.patch.gz | patch -p1
autoreconf -fi

CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
./configure \
  --prefix=/usr \
  --libdir=/usr/lib${LIBDIRSUFFIX} \
  --sysconfdir=/etc \
  --infodir=/usr/info \
  --mandir=/usr/man \
  --disable-rpath \
  --build=$ARCH-slackware-linux \
  --host=$ARCH-slackware-linux \
  $nix \
  $share \
  $var

make
make install DESTDIR=$PKG

install -D --mode 0755 $CWD/config/rc.guix $PKG/etc/rc.d/rc.guix.new
mkdir -p $PKG/gnu

find $PKG -print0 | xargs -0 file | grep -e "executable" -e "shared object" | grep ELF \
  | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true

find $PKG/usr/man -type f -exec gzip -9 {} \;
for i in $( find $PKG/usr/man -type l ) ; do ln -s $( readlink $i ).gz $i.gz ; rm $i ; done

rm -f $PKG/usr/info/dir
gzip -9 $PKG/usr/info/*.info*

for i in systemd upstart; do rm -rf $PKG/usr/lib${LIBDIRSUFFIX}/$i; done

DOCS="ABOUT-NLS AUTHORS CODE-OF-CONDUCT COPYING HACKING INSTALL NEWS README \
      ROADMAP THANKS TODO"

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a $DOCS $PKG/usr/doc/$PRGNAM-$VERSION
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc
cat $CWD/doinst.sh > $PKG/install/doinst.sh

cd $PKG
/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.${PKGTYPE:-tgz}
